On the opening day of a new movie, 300 people attended the premier. The manager surveyed 50 people at random as they left the theater and asked them to rate the movie on a scale of 1 to 10. The manager found the average rating of the new movie given by the people at a 90% confidence interval is between 7.7 to 8.9. Which of the following conclusions is the most reasonable based on the confidence interval?

A. It is 90% certain that the mean rating of any movie given by a person is between
7.7 and 8.9.
B. 90% of the people rated the new movie between 7.7 and 8.9.
C. 90% of the people rated any movie between 7.7 and 8.9.
D. It is 90% certain that the mean rating of the new movie given by a person is between 7.7 and 8.9.